The Collaborative International Dictionary of English v.0.48:

Fustian \Fus"tian\, n. [OE. fustan, fustian, OF. fustaine, F.
   futaine, It. fustagno, fr. LL. fustaneum, fustanum; cf. Pr.
   fustani, Sp. fustan. So called from Fust[=a]t, i. e., Cairo,
   where it was made.]
   1. A kind of coarse twilled cotton or cotton and linen stuff,
      including corduroy, velveteen, etc.
      [1913 Webster]

   2. An inflated style of writing; a kind of writing in which
      high-sounding words are used, above the dignity of the
      thoughts or subject; bombast.
      [1913 Webster]

            Claudius . . . has run his description into the most
            wretched
            fustian.                              --Addison.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Fustian \Fus"tian\, a.
   1. Made of fustian.
      [1913 Webster]

   2. Pompous; ridiculously tumid; inflated; bombastic; as,
      fustian history. --Walpole.
      [1913 Webster]

WordNet (r) 3.0 (2006):

fustian
    n 1: pompous or pretentious talk or writing [syn: bombast,
         fustian, rant, claptrap, blah]
    2: a strong cotton and linen fabric with a slight nap

Moby Thesaurus II by Grady Ward, 1.0:

72 Moby Thesaurus words for "fustian":
   absurdity, amphigory, babble, babblement, balderdash,
   bibble-babble, blabber, blather, bombast, bombastic, bombastry,
   claptrap, double-talk, drivel, drool, fiddle-faddle, fiddledeedee,
   flatulent, flummery, folderol, fudge, gabble, galimatias, gammon,
   gassy, gibber, gibberish, gibble-gabble, gobbledygook,
   good-for-nothing, highfalutin, hocus-pocus, hot air, humbug,
   inflated, jabber, jargon, meaningless, mouthy, mumbo jumbo,
   narrishkeit, niaiserie, nonsense, pack of nonsense, palaver, prate,
   prattle, purposeless, rant, rigamarole, rigmarole, rodomontade,
   rubbish, skimble-skamble, stuff and nonsense, stultiloquence,
   swollen, trash, trumpery, tumescent, tumid, turgescent, turgid,
   twaddle, twattle, twiddle-twaddle, unpurposed, useless, vaporing,
   waffling, windy, worthless